Qt编写地图综合应用之绘制雨量分布

一、前言

雨量分布图是在区域地图基础上,针对区域中的每个最小单位区域比如县城点位不同颜色显示,最开始做这个封装的时候,并没有提供单独设置每个点颜色的接口,后面经过几个客户的强烈建议,咬咬牙把每个点都可以单独设置不同颜色的接口加进去,这样就更加符合实际的需求,比如这个点到了报警阶段则红色显示,正常阶段则绿色显示,如果没有设置过颜色,就取值默认的颜色,全部不设置颜色则全部取默认的颜色。每个点的颜色值和对应点的经纬度坐标一样,队列集合设置下去。

二、功能特点

同时支持闪烁点图、迁徙图、区域地图、世界地图、仪表盘等。

可以设置标题、提示信息、背景颜色、文字颜色、线条颜色、区域颜色等各种颜色。

可设置城市的名称、值、经纬度 集合。

可设置地图的放大倍数、是否允许鼠标滚轮缩放。

内置世界地图、全国地图、省份地图、地区地图,可以精确到县,所有地图全部离线使用。

内置了各省市json数据文件转js文件功能,如有数据更新自行转换即可,支持单个文件转换和一键转换所有文件。

内置了从json文件或者js文件获取该区域的所有名称和经纬度信息集合的功能,可以通过该方法获取到信息用来显示。

依赖浏览器组件显示地图,提供的demo支持webkit/webengine/miniblink/ie 多种方式加载网页。

采用miniblink浏览器内核打通了Qt5.6及后续版本+mingw编译器缺少浏览器模块的遗憾,使得整个项目支持所有Qt版本,亲测4.7到6.2等任意版本。

闪烁点迁徙图等设置的点支持单独设置颜色。

提供接口直接获取点击的点相关信息,方便程序联动处理。

拓展性极强,可以依葫芦画瓢自行增加各种精美的echarts组件,做出牛逼的效果。

内置的仪表盘组件提供交互功能,demo演示中包含了对应的代码。

函数接口友好和统一,使用简单方便,就一个类。

支持任意Qt版本、任意系统、任意编译器。

三、体验地址

体验地址:https://pan.baidu.com/s/1ZxG-oyUKe286LPMPxOrO2A 提取码:o05q 文件名:bin_map.zip

国内站点:https://gitee.com/feiyangqingyun

国际站点:https://github.com/feiyangqingyun

四、效果图

五、相关代码 

void frmEcharts::initMap()
{
    //主动设置下echart控件的高度
    echart->setHeight(ui->widget->height());

    QStringList cityName, cityValue, cityPoint, cityColor, cityTip;
    cityName << "上海" << "北京" << "成都" << "武汉" << "厦门" << "广州";
    cityPoint << "121.48,31.22" << "116.46,39.92" << "104.06,30.67" << "114.31,30.52" << "118.1,24.46" << "113.23,23.16";

    echart->setCityName(cityName);
    echart->setCityPoint(cityPoint);
    echart->setZoom(1.0);
    //全国地图是 china 世界地图可以换成 world
    echart->setMapJsName("china");
    echart->setMapAreaName("china");

    if (currentText == "闪烁点图") {
        cityValue << "250" << "220" << "150" << "180" << "140" << "170";
        //设置不同的颜色
        cityColor << "#00FF00" << "#FDA356" << "#EB766E" << "" << "#47CAF6" << "#F9BE4F";
        //设置不同的悬停提示
        cityTip << "上海 = 80%" << "北京 = 89%" << "成都 = 86%" << "武汉 = 78%" << "厦门 = 65%" << "广州 = 70%";

        echart->setCityValue(cityValue);
        echart->setCityColor(cityColor);
        echart->setCityTip(cityTip);
    } else if (currentText == "迁徙图") {
        cityValue << "1" << "0" << "0" << "0" << "0" << "0";
        //设置不同的颜色
        cityColor << "#00FF00" << "#FDA356" << "#EB766E" << "" << "#47CAF6" << "#F9BE4F";
        //设置不同的悬停提示
        cityTip << "上海 = 80%" << "北京 = 89%" << "成都 = 86%" << "武汉 = 78%" << "厦门 = 65%" << "广州 = 70%";

        echart->setCityValue(cityValue);
        echart->setCityColor(cityColor);
        echart->setCityTip(cityTip);
    } else if (currentText == "仪表盘") {

    } else if (currentText == "世界地图") {
        cityName.clear();
        cityValue.clear();
        cityPoint.clear();
        cityColor.clear();
        cityTip.clear();

#if 0
        cityName << "美国1" << "美国2" << "美国3" << "英国" << "德国" << "荷兰" << "澳大利亚" << "温州";
        cityValue << "0" << "0" << "0" << "0" << "0" << "0" << "0" << "1";
        cityPoint << "-115.652087,44.677279" << "-97.990682,32.358956" << "-119.037189,35.667425"
                  << "-1.742162,52.468150" << "10.032107,50.633281" << "5.763934,53.181365"
                  << "134.250655,-23.981496" << "120.65,28.01";
#else
        cityName << "北美洲" << "南美洲" << "非洲" << "欧洲" << "大洋洲" << "印度" << "中国";
        cityValue << "0" << "0" << "0" << "0" << "0" << "0" << "1";
        cityPoint << "-101.670961,41.103997" << "-58.842054,-11.895087" << "22.106051,14.099049"
                  << "15.777381,49.971800" << "132.637011,-25.596128" << "78.475369,22.934290"
                  << "113.651000,39.526776";
#endif

        for (int i = 0; i < cityName.count(); i++) {
            cityColor << "";
            cityTip << QString("销售额占比: %1 = %2%").arg(cityName.at(i)).arg(rand() % 100);
        }

        echart->setCityName(cityName);
        echart->setCityValue(cityValue);
        echart->setCityPoint(cityPoint);
        echart->setCityColor(cityColor);
        echart->setCityTip(cityTip);
        echart->setMapJsName("world");
        echart->setMapAreaName("world");
    } else if (currentText == "区域地图") {
        cityName.clear();
        cityValue.clear();
        cityPoint.clear();
        cityColor.clear();
        cityTip.clear();

        QString dirName = ui->cboxDir->currentText();
        QString areaName = ui->cboxJson->currentText();
        QString jsName = dirName + "/" + areaName;

#if 1
        //根据文件获取名称+经纬度集合
        //QString jsonFile = QString("%1/areajson/%2/%3.json").arg(ConfigPath).arg(dirName).arg(areaName);
        //QStringList infos = EchartJs::getInfoFromJson(jsonFile);
        QString jsFile = QString("%1/areajs/%2/%3.js").arg(ConfigPath).arg(dirName).arg(areaName);
        QStringList infos = EchartJs::getInfoFromJs(jsFile);
        foreach (QString info, infos) {
            QStringList list = info.split("|");
            cityName << list.at(0);
            cityValue << QString("%1").arg((rand() % 100) + 100);
            cityPoint << list.at(1);
        }
#else
        //固定写死
        if (areaName == "上海") {
            cityName << "浦东新区" << "闵行区" << "金山区" << "奉贤区" << "嘉定区";
            cityValue << "250" << "100" << "200" << "150" << "220";
            cityPoint << "121.567706,31.245944" << "121.375972,31.111658" << "121.330736,30.724697" << "121.458472,30.912345" << "121.250333,31.383524";
        }
#endif

        for (int i = 0; i < cityName.count(); i++) {
            cityColor << "";
            cityTip << QString("%1 = %2").arg(cityName.at(i)).arg(cityValue.at(i));
        }

        echart->setCityName(cityName);
        echart->setCityValue(cityValue);
        echart->setCityPoint(cityPoint);
        echart->setCityColor(cityColor);
        echart->setCityTip(cityTip);
        echart->setMapJsName(jsName);
        echart->setMapAreaName(areaName);
    } else if (currentText == "雨量分布") {
        cityName.clear();
        cityValue.clear();
        cityPoint.clear();
        cityColor.clear();
        cityTip.clear();

        QString dirName = "江西";
        QString areaName = "吉安市";
        QString jsName = dirName + "/" + areaName;

        QString jsFile = QString("%1/areajs/%2/%3.js").arg(ConfigPath).arg(dirName).arg(areaName);
        QStringList infos = EchartJs::getInfoFromJs(jsFile);
        foreach (QString info, infos) {
            QStringList list = info.split("|");
            cityName << list.at(0);
            cityValue << QString("%1").arg((rand() % 150) + 100);
            cityPoint << list.at(1);
        }

        QStringList colors = QColor::colorNames();
        for (int i = 0; i < cityName.count(); i++) {
            cityColor << colors.at(rand() % colors.count());
            cityTip << QString("%1 = %2 毫米").arg(cityName.at(i)).arg(cityValue.at(i));
        }

        echart->setCityName(cityName);
        echart->setCityValue(cityValue);
        echart->setCityPoint(cityPoint);
        echart->setCityColor(cityColor);
        echart->setCityTip(cityTip);
        echart->setMapJsName(jsName);
        echart->setMapAreaName(areaName);
    }

    this->loadMap();
} 

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